in seven years. first it was hurricane katrina and now it's isaac. authorities dropped a mandatory evacuation order sunday for neighborhood threatened by a strained lock on a canal in st. tammany parish but they recommend people stay away. lock is on a man-made canal off the pearl river near the mississippi state line also on sunday, homeland security secretary visited the area. >> we are pretty-- the roof came off and water leaked in from the roof. took out the furniture and the flood water basically totaled the house. >> we will stay until this recovery is complete. we are here to be part of the team, part of the team in louisiana, and make sure that hurricane isaac is put to rest as soon as we can for all of those affected. we know this is a big, big tough storm that we will work through it together. >> reporter: once again, president obama will visit the new orleans area today.